Question 198367
Take note that we're only dealing with the natural (ie counting) numbers. Also, the interval is 3 to 7 (including the endpoints). So the set M written in set-builder notation is


*[Tex \LARGE M=\left\{x\|x\in \mathbb{N}, \ 3 \le x \le 7\right\}]


This reads: "the set M is the set of all x such that x is a natural number and x is between 3 and 7"